What is Levator Labia Superirioris?

Levator Labii Superioris is one of the four levator muscles in the face, all of which produce facial expressions. This muscle has fibers grouped into three sections that run vertically from the lower edge of the eye socket to the upper lip on both sides of the nose. When it downloads, it pulls up on both sides of the mouth and causes a grin or grim smile. Levator Labii Superioris must not be confused with the muscle Levator Labii Superioris alaeque NASI, which pulls the upper lips towards the beams, as in creating a growth. This includes the levator's muscles that increase part of the face. For example, Levator Palpebrae Superioris opens the lid, while the levator Labia superioris alaeque NASI runs between the nasal substances and the upper lip attracts the lips up towards the nose. The Anguli oris similar to the corners of the mouth out and up to make a smile while the levator Labii superioris draws vertically on both sides of the upper lip.

Levator Labii Superioris comes to the lower edge of both eye sockets on maxillary and zygomatic bones and can be considered three different parts. Closer to the nose and based on the innermost edge of the drawer on Maxille is the central part of the muscle, also known as the angular head. It is so named because it curves slightly around the nose as it descends to attaching to the cartilage and the skin of the nostril, as well as the upper lip just below the nostril.

In addition to the angular head, the central part of the levator Labii Superioris, known as an infraorbital head. It comes from the lower center of the edge of the eye socket to the maxillary and zygomatuic bones, the infraorbital head narrows as it descends and connects to the upper lip next to the angular head, its fibers continuous with those in the middle. The lateral or farthest part of the LEVator Labii Superioris is known as a zygomatic head. It is the smallest part of the muscle and the angle of its fibers slightly inwards, as it descends, inserting near the outer corner of the upper lip.